#11691 closed Bugs (fixed)
Boost.Log does not recognize file name pattern that includes datetime format specifiers
| Reported by: | Owned by: | Andrey Semashev | |
|---|---|---|---|
| Milestone: | To Be Determined | Component: | log |
| Version: | Boost 1.59.0 | Severity: | Problem |
| Keywords: | Boost, log, 1.59, file name pattern, datetime | Cc: |
Description
Running the following example http://www.boost.org/doc/libs/1_59_0/libs/log/example/doc/sinks_xml_file.cpp with file name pattern "%Y%m%d_%H%M%S_%5N.xml" results log files having names like "2015-Sep-29 08:42:02.330324" (using Boost 1.59).
If datetime specifiers are not included in file name pattern, everything looks good. For example, running with file name pattern "log_%5N.xml" generates logs in form "log_00001.xml".
Compiling the same example with Boost 1.58 gives results as expected.
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Thanks for reporting this. The problem is that Boost.DateTime facets that are used for formatting have hidden visibility when Boost.Log is compiled. Because of that date/time formatting fails.
I've added a workaround for this problem in https://github.com/boostorg/log/commit/284d5e6139460788ad011bfc05085cd6d624db78. Fix in Boost.DateTime is also needed, but I'll create a separate ticket for this.